xfs: remove unused parameter from xfs_writepage_map

The first thing that xfs_writepage_map does is clobber the offset
parameter.  Since we never use the passed-in value, turn the parameter
into a local variable.  This gets rid of an UBSAN warning in generic/466.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>

diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index b0cccf8a81a89e45dfb6163a70fcd603aff23d36..21e2d70884e18edc2c765584f201a8b04604837c 100644 (file)
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -896,13 +896,13 @@ xfs_writepage_map(
        struct writeback_control *wbc,
        struct inode            *inode,
        struct page             *page,
-       loff_t                  offset,
-       uint64_t              end_offset)
+       uint64_t                end_offset)
 {
        LIST_HEAD(submit_list);
        struct xfs_ioend        *ioend, *next;
        struct buffer_head      *bh, *head;
        ssize_t                 len = i_blocksize(inode);
+       uint64_t                offset;
        int                     error = 0;
        int                     count = 0;
        int                     uptodate = 1;
@@ -1146,7 +1146,7 @@ xfs_do_writepage(
                end_offset = offset;
        }
 
-       return xfs_writepage_map(wpc, wbc, inode, page, offset, end_offset);
+       return xfs_writepage_map(wpc, wbc, inode, page, end_offset);
 
 redirty:
        redirty_page_for_writepage(wbc, page);